# SDR DALA2016121309954

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 12, 2016
- Submitted: December 19, 2016
- Operation: Air carrier
- Aircraft: N903DA
- Make and model: Doug MD-90-30
- Registry model: [Doug MD-90-30](https://openairdocs.org/model/mcdonnell-douglas-md-90-30) (OpenAirDocs)
- Aircraft serial: 53383
- Aircraft time: 57,778 hours, 31,564 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Condition: Inoperative
- Location: Cabin
- Stage of operation: IN
- How discovered: C
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2016121309954

## Discrepancy

FORWARD FLIGHT ATTENDANT PANEL EMERGENCY LIGHT ARM SWITCH WILL NOT TURN ON EMERGENCY LIGHTS.  TROUBLESHOT REMOVED AND REPLACED POWER SUPPLY B5-125 IAW MM.  ALL LIGHTS CHECK GOOD.

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